mease



(N10 Model.) 2 Sheets-Sheet 1. v

G, R, MEASE- (No'Model.) 2 Sheets-Sheet 2.

G. R. MEASE.

. GRINDING MILL.

N0. 594,352. l Patented NOV. 23,1897.

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UNITED STATES Frrcn.

PATENT GEORGE R. MEASE, OF MARION, OHIO, ASSIGNOR OF ONE-HALF TO JOHNKENDALL, OF SAME PLACE.

GRlNDlNG-NIILL.

SPECIFICATION forming part of Letters Patent No. 594,352, dated November23, 1897.

Application filed May 24, 1 8 9 7.

To all whom, it may concern,.-

Beit known that I, GEORG-E R. MEASE, a citizen of the United States,residing at Marion, in the county of Marion and State of Ohio, haveinvented certain new and useful Improvements in Grinding-Mills; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in grinding-mills designed for usein grinding feed for stock orY domestic purposes, and the novelty andmany advantages will appear from the following description and claimswhen taken in connection with theannexed drawings, in which- Figure l isa vertical sectional view of my improved mill with parts broken away.Fig. 2 is a sectional view taken on the line w of Fig. 1 with partsomitted and parts broken away. Fig. 3 is a sectional View taken in theplane indicated by the dotted line y y of Fig. l. Fig. 4 is a sectionalview taken in the plane indicated by thedotted line w w of Fig. 1 withparts omitted and parts broken away. Fig. 5 is a perspective sectionaldetail view .of the stationary spider or dome. Fig. 6 is a similar viewof the runner or cone. Fig. 7 is a similar view of the rubber. Fig. 8 isa perspective sectional detail viewof the casing and the shell,illustrating the manner of connection. Fig. 9 is a detail sectionalperspective view of the rubber, taken from the opposite side of Fig. 7;and Fig. 10 is a perspective detail sectional view of the conveyer.`

Referring by letters and numerals to the said drawings, A indicates thecasing, which has its dome a of a spider or skeleton form, comprisingribs or branches,as shown, having upon their upper sides teeth h, whichcoperate with teeth on a rotatable spider, as will be hereinafterdescribed, in eecting the initial grinding of the stock. The casing isprovided on its under side and extending a suflicient distance from itsbase upwardly with an annular recess c and is provided at its base withan external ange having lug-eyes d to receive bolts e, which take intoeyes f in legs g. The casing is furthermore provided in the under SerialNo. 637,957. (No model.)

side of its base with recesses h to receive lugs -k on the shell, aswill be presently described. B indicates the shell. (Better shown inFig.

8 of the drawings.) This shell,which is of an annular form, is designedto be received snugly within the recess c and is provided on its outerside, at its lower end, with lugs Zr; to take into ,recesses h, formedin the casing, as shown. The shell also has a shoulder Z on its outerside to vbear in a recess m of said casing and is provided on its innerside with teeth p, which are of a form substantially as shown, havingbetween each series long teeth or rubbers q, which extend the entirewidth of said shell. The shell is furthermore provided at its lower endand on its inner side with a l recess having aperpendicular or straightwall n and a pitched or oblique wall j, for a purpose which willpresently appear.

The casing is provided externally at a suitable altitude with a groovedshoulder r, which is designed to receive a depending ange s on a castingt, which casting has a flange u, for the attachment of a hoppero, whichis secured thereto by means of bolts and nuts or other suitablefastening devices, and this casting may be also formed with projectingarms fw, by which horse-power may be applied. Formed integral with orsecured to said casting is the rotatable spider O, which has its curvedbranches provided with depending 'teeth D. This rotatable spider has ahub E, whose central bore is provided with one or more splines l to takeinto a grooveor grooves 2 in the hub F of the runner or cone G. Therunner or cone G is in substantially the shape of a frustum of a cone,comprising the dome or top 3, with the hub F rising centrally therefromand provided with a central vertical aperture 4. On the upper side ofthis runner or cone I provide cob-crushing teeth of a peculiar construction. These teeth 5, as better shown in Fig. 6 of the drawings, havethree cutting edges and taper from their bases upwardly, the centralcutting edge 6 being well in advance of the lateral cutting edges 7, andall of such edges are on the face side and are designed to cooperatewith similar teeth 8, which depend from the branches of the stationaryspider o, in acting upon the material as it leaves the primary teeth inits passage down the mill.

IOO

As will be readily seen by reference to Figs.

5 and 6, the three cutting edges are formed on the faces of the teeth 5and 8 by providing said teeth in their faces at opposite sides of thevertical centers thereof with grooves 5 of concave form incross-section. It will also be observed that the edges of the teeth thusformed are all adapted to eut in the same direction, which materiallyincreases the efficiency in cutting and crushing eorncobs and the like.

H indicates a rubber or annulus. This annulus is provided on its outerside with a series of teeth or rubbers 9, which may be of the shape ofsaw-teeth in cross-section, and each series is divided by guides 10,which extend throughout the height of the annulus and a sufficientdistance above the same, as indicated by 11, for a purpose which willpresently appear. This annulus or rubber is provided on its inner upperside with a iiange 12, which is provided at suitable points in its edgewith notches 13. The base of the runner or cone G is provided withoutwardly-directed lugs 14, designed to take beneath the liange 12 ofthe annulus H, and is furthermore provided with a plurality of shortarms or lugs 15, designed to pass through the slots 13 and take over theange 12 when the parts have been turned in the proper direction, theiiange 12 being preferably provided on its under side at points to theright of the notches 13 with shoulders 1G to abut against the lugs 14 ofthe runner and limit the movement of the two parts with respect to eachother.

In connecting the runner or cone G and the rubber H the lugs 15 of thecone G are passed upwardlythrough the notches 13 in the fiange 12 of therubber H, so that the lugs 15 will rest above the iiange 12 and the lugs14 below the said flange. vThe cone or runner G is then turned to theright until its lugs 15 abut against the edges of the lugs 1G at theunder side of the fiange 12 of the rubber. lith this done it will beseen that the runner II will be held against movement up or down withrespect to the cone or runner G. It will also be seen that inasmuch asthe cone or runner G is turned toward the right its lugs 14, engagingthose of the rubber H, will enable the cone or runner to turn therubber. It will further be appreciated that this connection between thecone or runner G and the rubber H does not entail the employment ofbolts or other connecting devices and that it permits of the cone andrubber being readilyconnected and disconnected when desired without theemployment of skilled labor or implements. Vhen the parts are thusconnected without lthe aid of screws or bolts, as heretofore found soobjectionable, it will be seen that the upper ends 11 of the guide 10project a sufficient distance above the dome of the runner to serve asguides in directing the partly-ground material to the series of teeth 9.

The rubber or annulus His provided at its lower end or base and on itsouter side with lugs 40, (see Figs. 1 and 7,) which have an inclinedsurface 41 and a vertical end surface 41, the former surface beingdesigned to engage the inclined surface j in the recess of the shell Band the latter to engage the vertical surface n in said recess. Theinclined surfaces 41 and ,j are parallel to the cutting edges of theteeth p 9 of the shell B and rubber H, which edges of the teeth p 9 areparallel to each other, as shown. Consequently it will be observed thatthe surfaces 41 of the lugs 40, engaging the surface j in the recess ofthe shell B, will hold the teeth 9 and p in corresponding positions andwill eifectually prevent said teeth from cutting or damaging each other,even when the rubber H is raised too far by careless adjustment. Thecontactin g vertical surfaces 41 and n are always in Contact, and theyserve to hold the rubber H central when it is adjusted to grind coarseas well as when it is adjusted to reduce the material being ground to afine state. This renders my improved mill superior to those in which therubber wabbles and grinds tine on one side and coarse on the other, justas it happens to feed itself more or less unequally.

The stationary spider or dome of the casing is provided around itscentral aperture with a semicircular groove or raceway 17, within whichare placed antifriction balls or rollers 1S, and the hub E is providedon its under side with a similar groove or way 19 to receive the uppersides of the balls and furnish the roller bearing between the two parts.By this means a great saving in power is effected, which is an importantdesideratum in machines of this character.

The hub E is provided on its upper side with an annular groove 20, and acap I is mounted on said hub and bears in said groove. This cap has acentral aperture 21, and arranged above and bearing upon said cap is asleeve 22 to furnish a bearing for a hand-wheel 23. The hand-wheel isprovided with a central aperture and receives a vertically-disposed rod24, which is headed at its lower end and takes through the centralaperture in the hub F of the runner, the aperture in the cap, and alsotakes through the sleeve, its upper end being externally threaded toreceive interna-l threads on the hand-wheel, whereby the rotatablcspider and the cone or runner may be connected and adjustably secured tothe casing without the employment of a bridgetree or other support,which has been heretofore found so indispensable, yet so objectioin ableand expensive.

The legs g, which support the entire mill and are connected to the shellor casing by bolts and nuts, are also provided on their inner uppersides with a rabbet or groove 25 to receive an outwardlydirected flange2G of a conveyer-trough 27. This conveyer-trough, with its flangeresting upon the rabbeted or recessed part of the legs, is secured inposi- IOO IIO

tion, with the lugs Za of the shell B bearing thereon, so that bolts andthe like are also dispensed with in securing such parts together. Itwill be observed that the lower under edge of the shell B projectssufficiently into the conveyer-trough, as better shown at 28, to guidethe material as it leaves the grinders or teeth in passing between therunner or annulus H and the shell B. The con# veyer-trough is of a formsubstantially as shown, assuming a position Within and at the base ofthe mill, having an inwardly-directed or oblique wall29 and an upwardlyand inwardly curved wall'30, which latter terminates at its upper edgeiu a rounded portion 3l.

J indicates the conveyer. This conveyer covers the trough, as shown,having a horizontal portion 32, which terminates at its inner edge in aroll, forming an under groove 33, which takes over and bears on therounded edge 31 of the trough. The horizontal portion of this conveyerhas depending from it plates 34, which are of a shape corresponding tothe interior of the trough and entering the same, the plates beingarranged at suitable intervals apart.

The conveyer-trou gh is provided with a lateral discharge 35,so thattheA ground material may be discharged therefrom by the action of theconveyer. 1

The rubber or annulusHis provided at suitable points on its inner sidewith lugs 36, having eyes to receive angular branches 37, which risefrom the conveyer, as shown, so as to connect the conveyer with therubber or annulus and permit the same to be readily discounected.

From the foregoing description, taken in connection with theaccompanying drawings, the operation of my invention will be obvious. Itwill be seen that the parts are all of a cheap and durable constructionand are adapted to produce the very best results, there being no boltsor screws for securing the movable parts together. It will also be seenthat the friction has been reduced to a minimum, and such wear as may becaused by use can be overcome by the employment of the central rod andhand-wheel. This construction will also permit of an adjustment of theparts in new mills, so that it is not necessary to use such great careas heretofore in constructing the parts and assembling the same.

Having thus described my invention7 what I claim isl. In agrinding-mill, the combination with the casing having the lateral flangeat its base; of the shell provided with teeth on its inner side andtheangular wall at its base, and also having angular studs orlugs to takeinto correspondinglyshaped recesses in the casing, the rubber or annulushaving teeth on its outer side and lugs beveled to correspond with andengage the angular wall of the shell, the conveyer-trough, the legssecured to the casing by bolts and adapted to also receive the flange ofthe conveyer-trough, and the runner or cone having the lugs on its edgeas described.

2. In a grinding-mill, the combination of the casing, the annular shellarranged in the casing and having the teeth p, on its inner side andalso having the angular surface j, inclined in conformity to theinclination of the edges of the teeth p, and the vertically-adj ustableand rotatable rubber or annulus having the teeth 9, on its outer sidewith edges inclined in conformity to those of the teeth p, and alsohaving the lugs with surfaces 4l, inclined to correspond with and engagethe inclined surface j, of the shell7 substantially as specified.

3. In a grinding-mill, the combination of the casing, the annular shellarranged in the casing and having the teeth p, on its inner side andalso having the angular surface j, inclined in conformity to theinclination of the edges of the teeth p, and the vertically adj ustableand rotatable rubber or annulus having the teeth 9, on its outer sidewith edges inclined in conformity to those of the teeth p, and alsohaving the lugs with surfaces 4l, inclined to correspond with and engagethe inclined surface j of the shell, and further having theupwardly-extended guides l1, substantiallyas specified.

4. In a grinding-mill, the combination of the casing, the annular shellarranged in the casing and having the teeth p, on its inner side andalso having the angular surface j, inclined in conformity to theinclination of the edges of the teeth p, and the vertical surface n,immediately below the angular surface, and the vertically adjustable androtatable rubber or annulus having the teeth 9, on its outer side withedges inclined in conformity to those of the teeth p, and also havingthe lugs with surfaces 4l, inclined to correspond with and engage theinclined surface j, of the shell and with vertical surfaces 4l, toengage the vertical surface n, of the shell, substantially as specified.

5. In a grinding-mill, the combination of the casing provided with theopen-work or spider dome armed with teeth and having an annular grooveon its upper side and also having a central opening, a rotatable,toothed spider mounted on said dome and having a hub with a centralopening and an annular groove in its under side adapted to serve inconjunction with that in the casing-dome to form a raceway, ballsarranged in said raceway, the cone provided with teeth and having acentral hub extending through the aperture in the dome of the casing andthe aperture in the hub of the spider and keyed to the latter, theremovable and threaded rod passing through the aperture in the cone-hub,the threaded hand-wheel mounted on said rod, the annular shell arrangedin the casing and having the teeth p, on its inner side and .also havingthe angular surface j, inclined in conformity to the inclination oftheedges of the IOO IIO

teeth p, and the vertical surface n, immediately below the angularsurface, and the rubber or annnlus connected to the cone and having theteeth 9, on its outerside with edges inclined in Conformity to those ofthe teeth p, and also having the lugs With su rfaees 41, inclined tocorrespond with and engage the inclined surface j, of the shell and withvertical surfaces 41, t0 engage the vertical surface n, of the shell,substantially as specified.

G. In a grinding-mill, the combination of a cone having a plurality oflugs 14, arranged in one horizontal plane and a plurality of lugs 15,arranged in a horizontal plane above that of the lugs 14, and a rubber0r annulus having an inwardly-directed [iange 12, with notches 13, forthe passage of the lugs 15, of the cone, and also having lugs 1G, on itsunder side for the engagement of the lugs 14, of the cone, substantiallyas specified.

In testimony whereof I ailx my signature in presence of two Witnesses.

GEO. R. MEASE. lVitnesses:

G. E. MoUsER, CHAs. B. KEIsER.

